LIGHTPROOF Synonyms: 23 Similar and Opposite Words

lightproof

adjective

Definition of lightproof

as in waterproof

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Recent Examples of Synonyms for lightproof

Adjective

The Ambler silhouette, which is inspired by Sorel’s signature Caribou boot, comes to life in the slip-on clog version as a streamlined waterproof mule that blends in Needles’ signature purple with premium leather.

— Stephen Garner, Footwear News, 14 Sep. 2026
The soft rubber leaves are waterproof for outdoor decorating, and the vines offer plenty of drape for a dramatic appearance.

— Better Homes & Gardens, Better Homes & Gardens, 10 Sep. 2026

Definition of waterproof

Adjective

Cars are becoming more soundproof Today’s drivers aren’t hearing sirens, law enforcement agencies contend, because modern vehicles are adept at noise-blocking.

— Andrew J. Campa, Los Angeles Times, 10 Aug. 2026
That means kicking off with the sacred mountain where shamans perform mudang rituals, the spiritual tradition at the heart of the storyline, and then using that inspiration to step into the soundproof studio to put your vocal chops to the test.

— Rachel Chang, Travel + Leisure, 6 Aug. 2026

Definition of soundproof

Adjective

For now, access appears limited to the steadily expanding group of organizations granted access to Claude Mythos Preview through Anthropic’s — not entirely watertight — private Project Glasswing initiative.

— Robert Hart, The Verge, 9 June 2026
Tunnels are also not truly watertight, requiring drainage measures like sump pumps and creating maintenance and reliability issues, the group advised.

— Skyler Swisher, The Orlando Sentinel, 15 Feb. 2026

Definition of watertight

Adjective

O’Neill, a physics professor at Princeton, argued for the practical possibility of building human habitats that would float between Earth and the moon, housing tens of thousands of people in hermetic environments with earthlike gravity and climate.

— Jacob Weisberg, Vanity Fair, 10 Sep. 2026
This hermetic secrecy is how Allure beauty director Sarah Kinonen and I recently found ourselves in the bathroom of a suite in the Aman hotel on New York’s Fifth Avenue, brushing our teeth while members of the Dyson public relations team looked on.

— Jenny Bailly, Allure, 1 Sep. 2026

Definition of hermetic

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lightplanes

lightproof

lights

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“Lightproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lightproof. Accessed 16 Sep. 2026.

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Synonyms of lightproof

adjective

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